Terms of Service
Last updated: March 6, 2026
These Terms of Service ("Terms") govern your use of the Lumero mobile application and related services (the "Service") operated by Nemean Software, LLC ("Nemean," "we," "us," "our"). By using Lumero, you agree to these Terms. If you do not agree, do not use the Service.
1. Eligibility
You must be at least 13 years old (or the minimum age required in your jurisdiction) to use Lumero. If you are under 18, you represent that your parent or legal guardian has reviewed and agreed to these Terms on your behalf.
2. Your Account
To use Lumero, you must register with a valid phone number. You are responsible for:
- Maintaining the security of your device and account
- All activity that occurs under your account
- Keeping your registration information accurate
You may not create accounts in bulk, through automated means, or on behalf of others without their consent.
3. Acceptable Use
You agree to use Lumero in compliance with all applicable laws. You may not use the Service to:
- Send spam, unsolicited messages, or bulk communications
- Harass, threaten, stalk, or intimidate other users
- Distribute malware, viruses, or other harmful code
- Impersonate another person or entity
- Distribute content that exploits or harms minors
- Engage in fraud, phishing, or deceptive practices
- Attempt to reverse-engineer, decompile, or extract source code from the app (except where permitted by law)
- Interfere with or disrupt the Service or its infrastructure
- Use the Service for any activity that violates applicable law, including sanctions and export control regulations
4. Content and Messages
You retain ownership of the content you send through Lumero. Because all messages are end-to-end encrypted, we do not have access to the content of your communications and cannot monitor or moderate messages.
You are solely responsible for the content you share. If you receive content that you believe violates these Terms, you may block the sender and report the message. When you report a message, a decrypted copy of the reported content is sent to us for review. This is a deliberate action you take on your device — we cannot access message content in any other way.
5. Privacy
Your use of Lumero is also governed by our Privacy Policy, which describes how we collect, use, and protect your information. By using the Service, you agree to our data practices as described in the Privacy Policy.
6. Device Permissions
Lumero may request access to certain device features to provide its functionality:
- Camera — To take photos or videos to send in conversations or set a profile photo.
- Microphone — To record voice messages.
- Photo Library — To select existing photos and videos to send in conversations.
- Notifications — To alert you when you receive new messages.
These permissions are requested only when you initiate the relevant action and can be revoked at any time in your device settings. All media captured or selected is end-to-end encrypted before transmission.
7. End-to-End Encryption
Lumero uses end-to-end encryption (the Signal Protocol) to protect the content of your messages. This means:
- We cannot read, listen to, or view your messages, calls, or files
- We cannot recover your messages if you lose access to your device
- You are responsible for the security of your own device
8. Service Availability
We strive to provide a reliable service, but Lumero is provided "as is." We do not guarantee that the Service will be uninterrupted, error-free, or available at all times. We may modify, suspend, or discontinue the Service (or any part of it) at any time, with or without notice.
9. Intellectual Property
The Lumero name, logo, and app design are the property of Nemean Software, LLC. You may not use our trademarks without prior written permission. These Terms do not grant you any rights to our intellectual property except the limited right to use the Service as described here.
10. Account Termination
You may delete your account at any time from the app settings. We may suspend or terminate your account if we reasonably believe you have violated these Terms. Upon termination:
- Your account data will be deleted from our servers
- You will no longer be able to send or receive messages through Lumero
- Messages already delivered to recipients will remain on their devices (subject to any disappearing message timers)
11. Disclaimers
TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE" WITHOUT WARRANTIES OF ANY KIND, WHETHER EXPRESS, IMPLIED, OR STATUTORY, INCLUDING BUT NOT LIMITED TO IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
We do not warrant that the Service will meet your requirements, be secure, or operate without errors or interruptions.
12. Limitation of Liability
TO THE MAXIMUM EXTENT PERMITTED BY LAW, NEMEAN SOFTWARE, LLC SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF PROFITS, DATA, OR GOODWILL, ARISING OUT OF OR RELATED TO YOUR USE OF THE SERVICE, REGARDLESS OF THE THEORY OF LIABILITY.
OUR TOTAL LIABILITY FOR ANY CLAIMS ARISING UNDER THESE TERMS SHALL NOT EXCEED THE AMOUNT YOU PAID US IN THE TWELVE (12) MONTHS PRECEDING THE CLAIM, OR $100, WHICHEVER IS GREATER.
13. Indemnification
You agree to indemnify and hold harmless Nemean Software, LLC and its officers, employees, and agents from any claims, damages, losses, or expenses (including reasonable legal fees) arising from your use of the Service or violation of these Terms.
14. Dispute Resolution
Any disputes arising from these Terms or your use of the Service shall be governed by the laws of the State of Delaware, without regard to conflict of law principles. You agree to resolve any disputes through binding arbitration on an individual basis, and you waive any right to participate in class-action lawsuits or class-wide arbitration.
For claims under $10,000, arbitration shall be conducted online or by phone at your election. Either party may bring a claim in small claims court as an alternative to arbitration.
15. Changes to These Terms
We may update these Terms from time to time. We will notify you of material changes through the app or by other appropriate means. Your continued use of Lumero after changes take effect constitutes acceptance of the updated Terms. If you do not agree to the updated Terms, you should stop using the Service and delete your account.
16. General
- Entire agreement — These Terms, together with our Privacy Policy, constitute the entire agreement between you and Nemean Software, LLC regarding the Service.
- Severability — If any provision of these Terms is found to be unenforceable, the remaining provisions will continue in full force and effect.
- No waiver — Our failure to enforce any provision of these Terms does not constitute a waiver of that provision.
- Assignment — You may not assign your rights or obligations under these Terms without our prior written consent. We may assign our rights and obligations without restriction.
17. Contact Us
If you have any questions about these Terms, please contact us at: